Are you ready to lock your PC something different. Here is a freeware waiting for you. Password Booster Screen Lock is a free Windows program that quickly locks your computer whenever you remove your Password Booster or enrolled USB flash drive, and then unlocks your computer whenever you re-insert the same device. It lets you use your Password Booster or USB flash drive like a "house key" for your computer. The Setup program for Screen Lock is included on your Password Booster and is named SetupPBScrLock.exe.

After you login to your computer, Screen Lock quietly waits for you to insert your Password Booster or USB flash drive. Now, whenever you remove the device from the USB port, your computer login session is immediately locked. Only the device that was used to lock your computer can be used to unlock your computer. This is the locking device.A USB flash drive must be enrolled before it can be used to lock your screen. To enroll a flash drive, click-left on the tray icon and then click the Setup button. Follow the on-screen instructions to enroll the USB flash drive. Enrollment watches for you to insert a new USB flash drive, and uses that flash drive as the device to enroll.

You can also un-enroll a flash drive so that it no longer locks your screen when it is removed.Click Here to download this (or) Click Here to know more.